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* Upload an image and print its delivery URL.

* Prerequisites

* - CLOUDINARY_URL set in the environment:

* export CLOUDINARY_URL="cloudinary://<api_key>:<api_secret>@<cloud_name>"

* - cloudinary-http5 (and its transitive cloudinary-core) on the classpath.

* Run

* javac -cp "<classpath>" -d out examples/UploadImage.java

* java -cp "<classpath>:out" UploadImage

* How this differs in a real project

* A real application would take the file from a request rather than a constant, would not

* print credentials-adjacent data, and would persist ASSET_ID in its own datastore instead

* of relying on the public ID.

* Docs: docs/upload-image.md

import com.cloudinary.Cloudinary;

import com.cloudinary.Transformation;

import com.cloudinary.utils.ObjectUtils;

import java.io.IOException;

import java.util.Map;

public class UploadImage {

private static final String SOURCE_URL =

"https://res.cloudinary.com/demo/image/upload/sample.jpg";

private static final String PUBLIC_ID = "examples/upload_image";

public static void main(String[] args) {

try {

Cloudinary cloudinary = new Cloudinary();

if (cloudinary.config.cloudName == null) {

System.err.println("No Cloudinary configuration found. Set CLOUDINARY_URL.");

System.exit(1);

}

Map result = cloudinary.uploader().upload(SOURCE_URL, ObjectUtils.asMap(

"public_id", PUBLIC_ID,

"overwrite", true));

System.out.println("public_id: " + result.get("public_id"));

System.out.println("asset_id: " + result.get("asset_id"));

System.out.println("format: " + result.get("format"));

System.out.println("dimensions: " + result.get("width") + "x" + result.get("height"));

System.out.println("secure_url: " + result.get("secure_url"));

// Append the format the server reported, so the URL names a real file. A bare

// public ID would produce ".../examples/upload_image" with no extension.

String optimized = cloudinary.url()

.transformation(new Transformation()

.width(400).crop("fill").gravity("auto")

.fetchFormat("auto").quality("auto"))

.generate(PUBLIC_ID + "." + result.get("format"));

System.out.println("optimized: " + optimized);

} catch (IllegalArgumentException e) {

System.err.println("Configuration error: " + e.getMessage());

System.exit(1);

} catch (IOException e) {

System.err.println("I/O error: " + e.getMessage());

System.exit(1);

} catch (RuntimeException e) {

System.err.println("Upload failed: " + e.getMessage());

System.exit(1);

}